DIN EN 16306:2013-05

This European Standard specifies a laboratory method for determining the resistance to thermal and moisture cycling of marble intended for cladding of building facades. Bowing and rapid strength loss is known to occur in some marbles when used as exterior claddings. Bowing is measured on test samples exposed to moisture from beneath and heating from above. The temperature interval is from 20 °C to 80 °C, one cycle completed each 24 h. The temperature of 80 °C is measured on a black reference, placed on the surface of one specimen to control the climate of the chamber/bath. The potential strength loss is measured according to EN 12372 or EN 13161 on reference and exposed specimens. The test standard is directed at manufacturers of marble slabs, processing companies and independent test laboratories. The committee responsible for this standard is NA 062-03-11 GA "Gemeinschaftsarbeitsausschuss NMP/NABau: Naturwerkstein; Anforderungen, Prüfverfahren und Terminologie" ("Joint working committee NMP/NABau: Natural stone; Requirements, test methods and terminology") at DIN.